Francis lewis sanders



(No Model.) I F. L. SANDERS.

' WRENCH.

No. 560,938. Patented May 26, 1896 UNITED STATES PATENT OFFICE.

A FRANCIS LEWIS SANDERS, OF NOTTINGHAM, ENGLAND.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 560,938, dated May 26,1896.

Application filed November 22, 1895. Serial No; 569,845. (No model.)

ToaZZ whom it may concern.-

Be it known that I, FRANCIS LEWIS SAN- DEBS, a subject of the Queen ofGreat Britain, residing at Nottingham, in the county of Nottingham,England, have invented certain new and useful Improvements in Wrenches;and I do hereby declare that the following is a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to an improved wrench for bolts, nuts, andscrews, which may be adjusted to different sizes, and if provided withteeth on the jaws may be used as a pipewrench; and the object of thisinvention is the provision of means for enabling the movable part of thewrench-jaw to be rigidly fixed with regard to the stationary part of thewrench-j aw after the wrench has been adjusted to the required size.

Two wrenches made according to this invention are shown in theaccompanying drawings, which are referred to in the following detaileddescription.

Figure 1 is a side view of a wrench embodying my invention. Fig. 2 is aside View of a modification of the same.

In the wrench shown in Fig. 1 the main part a has parallel sides and isrecessed at Ct to fit the largest nut for which the Wrench is designed.At the opposite end to the jaw there is a recess 1) c for the receptionof a screw (1, which is preferably milled on the top of the threads forfacilitating turning of the same. The other part of the jaw is wider atthe end f than at the end f and has a number of teeth g, which act as anut for the screw (1. There is also a cover or slide h, taperedinternally to correspond with the taper of the two parts of the wrench,and the movement of the slide in one direction is limited by a pin 19.The screw is fitted to rotate on a pin 6, while the end Z may be usedfor removing the cover of a cycle-tire and the end m as a screw-driver.The upper part of the wrench may be provided with pins It, so as to forma key for the cones in cycle bottom brackets. In a modified arrangementthe screw (1 is placed nearer the center of the wrench between thecrossbars of the slide h, the axle a being let into recessed grooves andfastened therein.

In the wrench shown in Fig. 2 the parts a, a, f, f, h, 10,1, and pcorrespond to the parts similarly lettered in Fig. 1. In this wrench theend f is provided with a circular tapped piece 'n, fitting a nut 0,which may be in the form of a rack-nut, as shown, or an ordinary millednut, fitting a recess in the part a.

When constructed for use as a pipe-wrench, the surfaces of the jaw areprovided with teeth, and the jaw may be wedge-shaped instead ofparallel. To adjust the relative position of the two jaws, the slide orcover is first moved from the jaws, so as to release the two parts ofthe wrench. The screw 01 in Fig. 1 or nut 0 in Fig. 2 is then turneduntil the two sides of the jaw fit the two parallel sides of the nut,after which the cover is pushed toward the jaw and the two parts of thewrench held firmly together.

The wrench may be of steel, wrought stampin gs, malleable cast-iron, orother suitable material, and the material may be treated by any usualprocess. In modifications the part a of the wrench may be taperedinstead of the part ff, or both parts may be tapered, while the screw d,Fig. 1, maybe attached to either part, and in larger-sized wrenches theslide may be provided with a mechanical device for moving the same.

Having thus described my invention and the means for carrying out thesame, what I desire to claim and secure by Letters Patent in the UnitedStates is- The combination in a wrench, of two jaws, one of said jawshaving a screw and the other jaw having a rack, and a wedge-shaped coverfor holding the parts together, substantially as described.

FRANCIS LEWIS SANDERS.

